Saunum Spa Session | 6kW - 9kW Air-Blending Sauna Heater UK + Sauna Wood

The Saunum Heaters

The End of "Hot Head, Cold Feet": A Climate Revolution

The Saunum Experience is more than just a heater; it is a patented climate-balancing system designed to solve the most common complaint in traditional saunas: temperature stratification. By actively mixing the scorching air from the ceiling with the cooler air near the floor, Saunum creates a perfectly uniform, oxygen-rich environment.

Whether you choose the Open Basket for a traditional aesthetic or the Closed Basket for a sleek, space-saving design, you are investing in a 5-in-1 home spa experience that includes Himalayan salt ion enrichment and advanced humidification. Order Review: Confirm your sauna's cubic volume to ensure your chosen kW rating provides the optimal "löyly" for your space.

1. Place Your Order & Order Confirmation

Selecting a Saunum unit is the first step toward a professional-grade wellness sanctuary. Once you have chosen your power output and basket style, place your order through our secure portal.

• Bespoke Dispatch: Unlike our standard accessories, Saunum heaters are specialised precision instruments. We do not hold these units in our UK warehouse; instead, they are shipped directly from Saunum’s facility in Estonia.
• Timeline: You will receive an immediate order confirmation, followed by a tracking update once the unit clears dispatch. The estimated delivery timeline for these premium units is approximately 2-3 weeks.

2. Delivery & Electrical Supply Information

Because Saunum units feature an integrated climate-balancing fan system, preparation is slightly different from a standard heater.

• Professional Consultation: Once your order is placed, you must consult with a certified electrician. It is the customer’s responsibility to ensure the property’s electrical supply and fuse ratings are sufficient.
  • Fuse Ratings: Typically require a 3-phase supply with C10 (for 4.5/6kW) or C16 (for 9kW) fuses.
• Control Requirements: The Saunum Experience requires a compatible control unit, such as the Saunum Leil, to manage both the heating elements and the 3-speed fan system.
• Positioning Strategy: To function correctly, the heater must be installed on a stable wall with the air outlet positioned below the level of the sauna benches. This is vital for the patented air-mixing technology to work.

3. Delivery Day & Inspection

Your Saunum heater will arrive via a specialised international courier.

• The Delivery: This is a Free Kerbside Delivery. Given the heavy stone capacity (~55kg to 105kg depending on the model), please ensure you have assistance available to move the boxes.
• Inspection Checklist: * The Main Unit: Check the stainless steel housing for any transit scuffs.
  • Salt Balls: Ensure the 7 Himalayan salt balls included in the kit are present and intact.
  • The Fan System: Briefly check that the fan outlet is clear of any packaging debris.
• The 24-Hour Window: Any transit damage must be reported to our team within 24 hours to ensure a swift resolution and protect your warranty.

4. Enjoy Your Saunum Heater

With the installation certified by your electrician, you are ready to customise your climate.

• Loading the Stones: Use stones sized between Ø 5–10 cm. Start by carefully stacking the largest stones at the bottom to allow air to flow freely around the heating elements. Avoid "packing" them too tightly, as the Saunum system relies on airflow.
• The First Burn (Curing): Before your first session, turn the heater on without the fan for 45–90 minutes. This "cures" the heating elements and stones. Keep the sauna room well-ventilated during this process to clear any manufacturing odours.
• The Salt Ion Benefit: Place the included Himalayan salt balls into the designated sockets. As the air circulates, it becomes enriched with negative ions, which can help clear airways and reduce inflammation.
• Aromatherapy: If you have opted for the Saunum aroma set, you can now add essential oils to the system, which will be blended directly into the circulating steam for a full sensory journey.
• Maintenance: Depending on how often you use your sauna, the salt balls will eventually wear down. Replace them every 6–12 months to maintain the respiratory benefits.

To ensure the safe and successful commissioning of your sauna, please review the following technical requirements. Please forward this document to your qualified electrician prior to both purchase and installation.

Important Advisory

All technical data, cable sizes, and fuse ratings provided in this document are estimates based on standard installation experience and are provided for preliminary budgetary purposes only.

The customer is solely responsible for hiring a certified professional to design and install the electrical circuit. Every property is unique; factors such as cable length, routing through insulation, ambient temperature, and your home’s total electrical load will dictate the final requirements. You must always defer to the judgment and formal calculations of your qualified electrician.

1. Scope of Responsibilities

A successful installation requires a clear division of labour between our specialists and your electrical contractor.

What Our Installation Team Provides:

• Mechanical assembly of the sauna cabin.
• Physical mounting of the heater unit and attachment of LED strips.

The Customer’s Responsibility (To be completed by a Certified Electrician):

• Circuit Design: Calculating and installing the correct cable and protective devices (MCB/RCD).
• Final Connections: Live wiring and terminal connection of the heater and lighting.
• Control Peripherals: Installation of control panels, door sensors, and thermostats.
• Certification: Testing and issuance of an Electrical Installation Certificate (EIC).

2. Electrical Supply Requirements

Sauna heaters are high-load appliances. They must be served by a dedicated electrical circuit. Under no circumstances should a sauna heater be connected to a standard ring main or domestic plug socket.

• Standard Voltage: 230V Single-Phase (UK) for heaters up to 12.0 kW. (Note: Heaters 13.2 kW and above require a 400V 3-Phase supply).
• Load Estimation: Watts ÷ Volts = Amps

Example: 6000W ÷ 230V = approximately 26 Amps.

3. Estimated Heater Output & Cable Sizing

These figures are for estimation only. Your electrician will provide the final specification based on BS 7671 standards.

*Note: Cables running through thermal insulation or over long distances (e.g., to a garden room) will require a significantly larger cross-section to prevent overheating and voltage drop. Always defer to your electrician’s judgement.

4. Mandatory Technical Requirements

Please ensure your electrician is specifically briefed on these sauna-specific requirements:

• Heat-Resistant Cabling (SiHF): Standard PVC (Twin & Earth) cable must not enter the sauna cabin. The final connection to the heater terminals must use a heat-resistant silicone rubber cable (SiHF) rated for at least 170°C.
• RCD Protection: The circuit must be protected by a 30mA RCD or RCBO to comply with safety regulations for high-temperature and moisture environments.
• Isolation: A local, double-pole rotary isolator switch is required outside the sauna cabin for maintenance and emergency use.
• Load Assessment: For heaters 9.0 kW and above, the electrician must verify that the property’s main incoming fuse (usually 60A–100A) can accommodate the heater alongside existing appliances like electric showers or car chargers.

5. Regulatory Compliance & Liability

All electrical work must comply with BS 7671 (IET Wiring Regulations). Our installation team are sauna assembly specialists, not certified electrical contractors. We accept no liability for issues arising from inadequate power supply, incorrect component selection, or non-compliant third-party wiring.

The Saunum Experience represents a significant advancement in sauna technology. Because Saunum units use a patented air-mixing and climate-balancing system, their installation requirements differ from those of traditional heaters. Please ensure these guidelines are followed precisely to ensure your system's performance.

1. Delivery Logistics & Initial Inspection

We provide free delivery on all Saunum systems. Due to the specialised nature of these units, they are dispatched via a dedicated international courier service.

• Kerbside Fulfilment: Delivery is provided to your doorstep. Saunum heaters have a significant stone capacity (ranging from 55kg to 105kg, depending on your model). Please ensure you have adequate assistance available to move the components to your installation area.
• The 24-Hour Audit: You must perform a comprehensive inspection of the unit immediately upon receipt.

The Housing: Inspect the stainless steel exterior for any transit-related scuffs or structural damage.

Fan System: Ensure the fan outlet is free of packaging debris or obstructions.

Reporting Requirement: Any transit damage or missing components must be reported to our team within 24 hours of delivery to protect your warranty and enable priority resolution.

2. Electrical Supply & Control Requirements

The integrated climate-balancing fan system requires specialised electrical planning.

Professional Consultation

Once your order is placed, you must consult with a certified electrician. It is strictly the customer’s responsibility to ensure the property’s electrical supply and fuse ratings are sufficient for a Saunum installation.

Power Requirements

While the smallest units can operate on a standard single-phase supply, most Saunum units require a 3-phase (400V) supply to handle the combined load of the heater and fan.

• 2.3kW – 3.6kW Models: Single-phase, generally require 16A–20A fuses.
• 4.5kW – 6.0kW Models: 3-phase, generally require 10A fuses (C10).
• 8.0kW – 9.0kW Models: 3-phase, generally require 16A fuses (C16).
• 10.5kW – 12.0kW Models: 3-phase, generally require 20A fuses (C20).
• 13.2kW – 19.8kW Models: 3-phase, generally require 25A–32A fuses.

Control Systems

The Saunum Experience requires a compatible advanced control unit, such as the Saunum Leil, to independently manage the heating elements and the 3-speed climate-balancing fan.

3. Strategic Positioning & Installation

To facilitate the patented air-mixing technology, the physical placement of the unit is critical.

• Structural Placement: The heater must be installed on a stable, load-bearing wall.
• Air Outlet Alignment: For the climate-balancing system to function correctly, the air outlet must be positioned below the level of the sauna benches. This allows the unit to draw in the hot air from the ceiling, mix it with cooler air, and redistribute it evenly—eliminating the "cold foot" effect.
• Ventilation: Despite the internal fan system, standard sauna ventilation (intake and exhaust) is still required to ensure fresh oxygen levels within the cabin.

4. Initial Commissioning (The First Run)

Before your first session, the heating elements must be burned in to remove manufacturing residues.

• Run the heater at 70°C for 30 minutes.
• Keep the sauna door open and ensure the area is well-ventilated.
• Once the burn-in is complete, you may place the washed stones and Himalayan salt balls into their designated positions.

5. Regulatory Compliance & Liability

Important: We serve as a specialist supplier, not a certified electrical contractor. All electrical work, particularly involving 3-phase supplies and integrated fan systems, must comply with BS 7671. We accept no liability for issues arising from inadequate power supply, incorrect fuse selection, or failure to position the air outlet at the manufacturer-specified height.

Professional Warranty & Technical Service Agreement: Saunum Sauna Climate Systems

As an authorised partner of Saunum Saunas OÜ, we provide an industry-leading warranty for the most innovative sauna climate technology in the world. Engineered in Tallinn, Estonia, Saunum devices are designed to solve thermal stratification through patented air-blending systems, delivering even heat and oxygen-rich steam.

This document serves as the formal General Warranty Conditions for Saunum products, ensuring that your investment is protected by factory-certified standards and technical excellence.

1. Warranty Scope & Duration

Saunum Saunas OÜ guarantees that all equipment will be free from material and manufacturing defects for a specified period following the date of delivery.

Warranty Service Commitment

In the event of a defect during the warranty period caused by substandard materials or assembly:

• Authorised Repair: Repairs or replacements will be conducted exclusively by Saunum’s recommended repair partners.
• Cost Waiver: All specialist labour and genuine spare parts charges are fully waived under approved claims.
• Manufacturer Discretion: Saunum reserves the right to determine whether to replace a specific faulty component or exchange the entire device for a new unit.
• Property Transfer: Any defective components or devices replaced under this warranty automatically become the property of Saunum.

2. Mandatory Conditions for Validity

To maintain the legal validity of the 2-year warranty, the following technical requirements must be strictly adhered to:

• Certified Commissioning: The device must be connected to the power network by a qualified, professional electrician in accordance with all local and national regulations.
• The Installation Report: The warranty is only valid if a completed installation report is submitted with any claim. This document is critical for verifying that the device was set up to Saunum’s factory specifications.
• Documentation: Owners must read the entire user manual before operation and keep it in a safe, accessible location for future maintenance reference.

3. Professional Operating Parameters

To ensure the longevity of the air-blending system and prevent damage not covered by warranty, the following operational limits apply:

• Ambient Temperature: The continuous temperature of the sauna room, measured from the floor to the highest point of the hot air outlet, must not exceed 80°C.
• Thermal Protection: Exceeding authorised operating temperatures will activate thermal protection and stop the fan. Malfunctions caused by persistent temperature overruns are not covered.
• Safety Clearances: All minimum safety distances specified in the technical manual must be maintained unconditionally to prevent fire hazards.

4. Specific Exclusions & Limitations

This warranty is a guarantee of manufacturing quality and does not cover issues arising from external factors or normal ageing:

• Consumable Parts: Heating elements (resistors) and Himalayan salt balls are considered consumables and are not covered under the device warranty.
• Maintenance: Routine cleaning, general upkeep, and the replacement of components due to normal wear and tear.
• Environmental & External Damage: Damage caused by accidents, lightning, water, fire, or inadequate ventilation beyond the manufacturer's control.
• Unauthorised Modifications: Any adaptation or modification of the device for purposes not indicated in the manual, or repairs performed by non-authorised parties.
• Incompatible Materials: Faults caused by the use of sauna stones or salt balls/orbs not recommended by Saunum.
• Transport Risks: Any damage or risks arising during the transport of the goods.

5. Initiating a Warranty Claim

If a defect is discovered, the user must immediately cease operation of the device. For all warranty claims and to be connected with a certified maintenance partner, please contact Heracles Wellness.

Claim Requirements:

• Proof of Purchase: Original invoice or delivery receipt.
• Installation Report: A copy of the completed report signed by the installing electrician.
• Visual Evidence: Photographs showing the defect in both close-up and general context.

Sauna Heater Return & Refund Policy

At Balance Recovery, we provide premium heating solutions for your wellness space. If the sauna heater you purchased is not suitable, you have the right to return the product within 14 days of delivery. To ensure a smooth return process and a full refund, please review the following conditions.

1. Right to Return & Notification

You have 14 days from the date of delivery to return your heater for a refund. To initiate a return, please contact our support team at contact@balancerecovery.co.uk. Our team will provide you with the necessary return authorisation and the correct warehouse address for dispatch.

2. Conditions for a 100% Refund

To receive a full refund, the heater must be returned in "as-new" condition in its original, undamaged packaging.

• Showroom Standard: You may handle and inspect the heater only as you would in a physical retail store (e.g., checking the finish, size, and weight).
• Installation Marks: A full refund is only possible if the heater has not been installed. Heaters showing signs of being mounted, screw marks on the chassis, or wiring marks on the terminals may be subject to a reduction in refund value.

3. Exclusion: Thermal Usage & Stones

For safety and technical reasons, the following conditions apply:

• Thermal Cycling: Once a heater has been connected to a power supply and turned on (commissioned), it has undergone thermal cycling. For safety and liability reasons, we cannot accept returns on heaters that have been used, as the internal elements can no longer be guaranteed as new.
• Sauna Stones: If sauna stones were included and the boxes have been opened or the stones washed or placed in the heater, they are non-returnable due to the dust and residue involved.

4. Diminished Value & Usage Fees

Should the heater be returned in a deteriorated state, or if it has been used beyond what is necessary to establish its characteristics, the buyer shall be liable for the reduction in value.

This includes damage to the stainless steel casing, damage to internal heating elements, or missing technical components such as thermostats or sensors. Balance Recovery reserves the right to deduct the loss in resale value from the final refund amount.

5. Refund Timeline

• Processing: Refunds will be processed once our technical team inspects the returned unit.
• Payment: The refund will be issued no later than 14 days from the date we receive the returned goods, using the same payment method used for the original purchase, unless otherwise agreed.

6. Electrical Compatibility Disclaimer

Please note that returning a heater because it was incompatible with your property's electrical supply (for example, requiring 3-phase power rather than single-phase) is subject to the same 14-day return window. We strongly recommend consulting a certified electrician to verify your site’s electrical requirements before unboxing or attempting installation of the heater.

Installation Manual

Spa Session Installation Video